<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<script>
			function hello() {
				window.alert('欢迎您？');
			}
			window.setTimeout("hello()",5000);
			window.alert('窗口的宽='+window.innerWidth);
			window.alert('窗口的高='+window.innerHeight);
		</script>
	</head>
	<body>
		
	</body>
</html>